Werder Bremen boss Viktor Skripnik has told Ousman Manneh he must work hard to prove his worth.

Ousman Manneh is set to be handed the chance to make the step up into Werder Bremen's first team just one year after arriving in Germany as an immigrant from Gambia.

Manneh, 18, arrived in Germany from the African nation as an unaccompanied minor last year.

The attacker was trained in the Rush Soccer Academy in the Gambian coastal town of Bakau from 2004 onwards but, for reasons he has yet to reveal, he migrated to northern Germany and joined up with the Blumenthaler SV to the north of Bremen.

Schalke have completed the signing of Franco Di Santo from Bundesliga rivals Werder Bremen after activating a release clause in the player's contract.

Di Santo left Bremen on Saturday morning after that clause was activated and, after undergoing a medical, he was officially unveiled as a Schalke player on Saturday evening, in time to link up with his new teammates for a three-day training camp from Sunday.

The former Chelsea and Wigan striker could make his debut in a friendly against Porto on Monday...

Italian defender Luca Caldirola has made the move from Werder Bremen to Bundesliga newcomers Darmstadt on a one-year loan.

The 24-year-old former Inter Milan full-back does not figure in the plans of Bremen coach Viktor Skrypnyk, who selected him only in his first game in charge last December -- a 4-1 defeat to Borussia Monchengladbach.